mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
113db2dddb
brings in support for an optional intent log which eliminates the need for background fsck on unclean shutdown. Sponsored by: iXsystems, Yahoo!, and Juniper. With help from: McKusick and Peter Holm
154 lines
4.3 KiB
C
154 lines
4.3 KiB
C
/*
|
|
* Copyright (c) 2002 Juli Mallett. All rights reserved.
|
|
*
|
|
* This software was written by Juli Mallett <jmallett@FreeBSD.org> for the
|
|
* FreeBSD project. Redistribution and use in source and binary forms, with
|
|
* or without modification, are permitted provided that the following
|
|
* conditions are met:
|
|
*
|
|
* 1. Redistribution of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* 2. Redistribution in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef __LIBUFS_H__
|
|
#define __LIBUFS_H__
|
|
|
|
/*
|
|
* libufs macros (internal, non-exported).
|
|
*/
|
|
#ifdef _LIBUFS
|
|
#ifdef _LIBUFS_DEBUGGING
|
|
/*
|
|
* Trace steps through libufs, to be used at entry and erroneous return.
|
|
*/
|
|
#define ERROR(uufsd, str) \
|
|
do { \
|
|
fprintf(stderr, "libufs in %s", __func__); \
|
|
if (str != NULL) \
|
|
fprintf(stderr, ": %s", str); \
|
|
if (errno) \
|
|
fprintf(stderr, ": %s", strerror(errno)); \
|
|
fprintf(stderr, "\n"); \
|
|
if ((uufsd) != NULL) \
|
|
(uufsd)->d_error = str; \
|
|
} while (0)
|
|
#else /* _LIBUFS_DEBUGGING */
|
|
#define ERROR(uufsd, str) \
|
|
do { \
|
|
if ((uufsd) != NULL) \
|
|
(uufsd)->d_error = str; \
|
|
} while (0)
|
|
#endif /* _LIBUFS_DEBUGGING */
|
|
#endif /* _LIBUFS */
|
|
|
|
/*
|
|
* libufs structures.
|
|
*/
|
|
|
|
/*
|
|
* userland ufs disk.
|
|
*/
|
|
struct uufsd {
|
|
const char *d_name; /* disk name */
|
|
int d_ufs; /* decimal UFS version */
|
|
int d_fd; /* raw device file descriptor */
|
|
long d_bsize; /* device bsize */
|
|
ufs2_daddr_t d_sblock; /* superblock location */
|
|
struct csum *d_sbcsum; /* Superblock summary info */
|
|
caddr_t d_inoblock; /* inode block */
|
|
ino_t d_inomin; /* low inode */
|
|
ino_t d_inomax; /* high inode */
|
|
union {
|
|
struct fs d_fs; /* filesystem information */
|
|
char d_sb[MAXBSIZE];
|
|
/* superblock as buffer */
|
|
} d_sbunion;
|
|
union {
|
|
struct cg d_cg; /* cylinder group */
|
|
char d_buf[MAXBSIZE];
|
|
/* cylinder group storage */
|
|
} d_cgunion;
|
|
int d_ccg; /* current cylinder group */
|
|
int d_lcg; /* last cylinder group (in d_cg) */
|
|
const char *d_error; /* human readable disk error */
|
|
int d_mine; /* internal flags */
|
|
#define d_fs d_sbunion.d_fs
|
|
#define d_sb d_sbunion.d_sb
|
|
#define d_cg d_cgunion.d_cg
|
|
};
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/*
|
|
* libufs prototypes.
|
|
*/
|
|
|
|
/*
|
|
* block.c
|
|
*/
|
|
ssize_t bread(struct uufsd *, ufs2_daddr_t, void *, size_t);
|
|
ssize_t bwrite(struct uufsd *, ufs2_daddr_t, const void *, size_t);
|
|
int berase(struct uufsd *, ufs2_daddr_t, ufs2_daddr_t);
|
|
|
|
/*
|
|
* cgroup.c
|
|
*/
|
|
ufs2_daddr_t cgballoc(struct uufsd *);
|
|
int cgbfree(struct uufsd *, ufs2_daddr_t, long);
|
|
ino_t cgialloc(struct uufsd *);
|
|
int cgread(struct uufsd *);
|
|
int cgread1(struct uufsd *, int);
|
|
int cgwrite(struct uufsd *);
|
|
int cgwrite1(struct uufsd *, int);
|
|
|
|
/*
|
|
* inode.c
|
|
*/
|
|
int getino(struct uufsd *, void **, ino_t, int *);
|
|
int putino(struct uufsd *);
|
|
|
|
/*
|
|
* sblock.c
|
|
*/
|
|
int sbread(struct uufsd *);
|
|
int sbwrite(struct uufsd *, int);
|
|
|
|
/*
|
|
* type.c
|
|
*/
|
|
int ufs_disk_close(struct uufsd *);
|
|
int ufs_disk_fillout(struct uufsd *, const char *);
|
|
int ufs_disk_fillout_blank(struct uufsd *, const char *);
|
|
int ufs_disk_write(struct uufsd *);
|
|
|
|
/*
|
|
* ffs_subr.c
|
|
*/
|
|
void ffs_clrblock(struct fs *, u_char *, ufs1_daddr_t);
|
|
void ffs_clusteracct(struct fs *, struct cg *, ufs1_daddr_t, int);
|
|
void ffs_fragacct(struct fs *, int, int32_t [], int);
|
|
int ffs_isblock(struct fs *, u_char *, ufs1_daddr_t);
|
|
int ffs_isfreeblock(struct fs *, u_char *, ufs1_daddr_t);
|
|
void ffs_setblock(struct fs *, u_char *, ufs1_daddr_t);
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* __LIBUFS_H__ */
|